Question

A 0.50 kg ball has 3.0 J of kinetic energy, how fast is it moving?

Answer 1

Answer: 3.464 m/s

Step-by-step explanation:

The Kinetic Energy
`K` is mathematically expressed as:

`K=(1)/(2)mV^(2)` (1)

Where:

`K=3J`

`m=0.5kg` is the mass of the body

`V` its velocity

Rewritting (1):

`3J=(1)/(2)(0.5kg)V^(2)` (2)

Isolating
`V`:

`V=\sqrt{(6J)/(0.5kg)}` (3)

Finally:

`V=3.464m/s`